Trigonometryeasy · Past Paper
If θ is an acute angle in a right-angled triangle, what does cos θ represent?
Ap/h
Bb/h
Cp/b
Dh/b
✓ Correct Answer: B — b/h
Cosine is the ratio of the base (adjacent side) to the hypotenuse.
Share this question
More from Trigonometry
- If θ is acute and sin θ = 0.8, find tan θ.
- Simplify the expression: (1/cos²θ) - (1/cot²θ)
- If sin theta + cos theta = sqrt(2) cos theta, find the value of cos theta - sin theta.
- Evaluate: sin^2 30 + cos^2 30
- Angle of elevation of a cloud from a point 60 m above a lake is 30° and depression of its reflection in lake is 60°. Height of cloud?